A critical examination of the decoupling approximation for small-angle scattering from hard ellipsoids of revolution
Date
2016-09-29
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Volume Title
Publisher
International Union of Crystallography
Abstract
The decoupling approximation, proposed by Kotlarchyk & Chen [J. Chem. Phys.
(1983), 79, 2461–2469], is a first-order correction to the experimentally
determined apparent structure factor that is necessary because of concentration
effects in polydisperse and/or nonspherical systems. While the approximation is
considered accurate for spheres with low polydispersity (<10%), the
corresponding limitations for nonspherical particles are unknown. The validity
of this approximation is studied for monodisperse dispersions of hard ellipsoids
of revolution with aspect ratios ranging from 0.333 to 3 and a guide for its
accuracy is provided.
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Citation
Greene, Daniel G., et al. "A critical examination of the decoupling approximation for small-angle scattering from hard ellipsoids of revolution." Journal of Applied Crystallography 49.5 (2016): 1734-1739.